JP2018019485A - Demand response-handling type power supply control system, controller, and control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a demand response-handling type power supply control system, controller, and control method that improve the degree of achievement for power use amount suppression requests in a plurality of users, promote suppression of power consumption, and reduce the number of contracts or the number of commands for power use amount suppression requests.SOLUTION: A demand response-handling type power supply control system comprises: a power supply device group 10A composed of a plurality of grouped power supply devices 10, each of which is connected to a load and a power supply, comprises a storage battery for storing power and management means connected to the storage battery to acquire power information at least including a residual amount of the storage battery and power consumption of the load, and supplies power from the power supply or the storage battery to the load; and a controller 5 that receives a power use amount suppression request and the power information acquired by the management means, controls respective storage batteries in the power supply device group 10A so that the power supply device group 10A achieves the power use amount suppression request on the basis of the received power use amount suppression request and the power information, and transmits an achievement situation of the power supply device group 10A for the power use amount suppression request.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a demand response-compatible power control system, a control device, and a control method, each of which has a plurality of power supply devices each including a storage battery and is capable of handling demand response by a consumer who consumes power.

  There is known a demand response (DR: Demand Response) in which an electric power supplier or a grid operator on the side of supplying electric power requests a consumer to reduce the amount of electric power used when power supply and demand is tight.

  Demand response is based on electricity charges such as hourly charges, etc., and electricity generated by the load when the electricity supplier or grid operator signs a contract with the customer and the wholesale power price rises or the power supply and demand situation becomes tight. It can be divided into incentive-based payments that require incentives (remuneration) for electric utilities or grid operators to request reductions in usage.

  In demand response, it is generally known to arrange a demand response aggregator that mediates between the electric utility, the grid operator and the customer. The demand response aggregator that has received a request to reduce power usage from an electric power company or grid operator makes a request to suppress power usage to each of the plurality of consumers to be managed. A service is provided to monitor whether or not the amount of power used is instructed by the use amount suppression request, and to inform the electric power company and system operator of the result (for example, Patent Documents 1 and 2, etc.) reference). In some cases, the electric utility or the system operator itself plays a role as a demand response aggregator. In this case, the demand response aggregator is not installed.

JP 2006-077051 A Japanese Patent Application Laid-Open No. 2006-039758

  However, since the electric power usage or the grid operator or the demand response aggregator requests the electric power consumption suppression for each customer, some customers cannot suppress the use of electric power and cannot obtain incentives. There is a case. For example, one consumer A can carry out power consumption control with a margin for the power consumption control request, while another customer B consumes the required reduction amount slightly. It may not be possible to implement power suppression. Customer B cannot obtain incentives despite trying to respond to a request to reduce power consumption, and if such a situation continues, Customer B will become incentive even if he / she responds to a request to suppress power consumption. Therefore, there is a problem that it becomes impossible to respond to a request for suppressing power consumption. On the other hand, when it is determined only whether or not the request for suppressing power consumption is achieved, the suppression of power consumption is greatly reduced so that the consumer A greatly exceeds the reduction amount required by the request for suppressing power consumption. Even if implemented, the incentives obtained will not be different from the incentives for customers who have achieved the amount of reduction required. For this reason, since there is no merit to suppressing the power consumption that greatly exceeds the required reduction amount, the consumer A does not suppress the power consumption more than necessary in response to the power consumption suppression request. There is a problem that becomes.

  In addition, electric utilities, grid operators, demand response aggregators, etc. must send a command to control power consumption to multiple customers, increasing the number of contracts with each customer and using power. There is a problem that a load must be generated because a request to suppress the amount must be transmitted to each consumer.

  In view of such circumstances, the demand response type power supply control system, control device, and control method of the present invention are intended to improve the achievement level of the power consumption reduction request in a plurality of consumers. Another object of the power supply control system, control device, and control method for demand response of the present invention is to promote suppression of power consumption. It is another object of the present invention to reduce the number of contracts and the number of commands for requesting suppression of power consumption.

  An aspect of the present invention that solves the above-described problem is a storage battery that is connected to a load and a power source and stores power, and is connected to the storage battery and acquires power amount information including at least a remaining power storage amount of the storage battery and power consumption of the load. A power supply device group in which a plurality of power supply devices that supply power from the power supply or the storage battery to the load are grouped, a power usage amount suppression request, and acquisition of the management means Each of the storage batteries of the power supply device group so as to achieve the power use amount suppression request as the power supply device group based on the received power usage amount suppression request and the power amount information. And a control device that transmits an achievement status of the power supply device group in response to the power usage restriction request. In response corresponding power source control system.

  In such an aspect, the control device controls each of the storage batteries of the plurality of power supply devices so as to respond to the power use amount suppression request based on the power amount information of the power supply device group, so that each consumer individually suppresses the power usage amount. Even if it is not possible to meet the demand, it is possible to achieve the power consumption reduction demand. In particular, in a specific consumer, when power consumption can be suppressed beyond the power consumption suppression request, it is possible to make up for the consumers who cannot respond to the power consumption suppression request. The achievement degree with respect to the usage amount suppression request can be improved, and the suppression of power consumption can be promoted. Also, since it is only necessary to transmit the power usage suppression request to the power supply device group as compared to the case of transmitting the power usage suppression request to each power supply device, the number of contracts with the customer and the power usage suppression request are transmitted. The load can be reduced.

  Here, it is preferable that the control device controls the discharge amount of each of the storage batteries in response to the power usage amount suppression request. According to this, the control device can achieve the power consumption reduction request without deleting the power consumption of the load only by controlling the discharge amount of each storage battery, and improves the convenience for consumers. be able to.

  Moreover, it is preferable that the said control apparatus receives the said electric power usage amount suppression request | requirement transmitted from the demand response aggregator. According to this, it is possible to respond to the power usage amount suppression request from the demand response aggregator.

  Further, the control device determines whether or not the power usage amount suppression request can be achieved by adjusting a discharge amount of the storage battery in each power supply device of the power supply device group, and based on a result of the determination, the power supply device group It is preferable to control the amount of power used. According to this, since it can be determined and controlled whether or not the power usage amount suppression request can be achieved, useless control such as controlling the usage amount is not performed even though it cannot be achieved.

  An aspect of the present invention includes a storage battery that is connected to a load and a power source and stores electric power, and a management unit that is connected to the storage battery and acquires power information including at least the remaining amount of the storage battery and the power consumption of the load. And receiving the power information and a power usage restriction request from a power supply device group in which a plurality of power supply devices that supply power from the power supply or the storage battery to the load are grouped. Control each of the storage batteries of the power supply group to achieve the power usage restriction request as the power supply group based on the usage restriction request and the power information, and the power supply group of the power supply group in response to the power consumption restriction request In the control device, the achievement status is transmitted.

  In such an aspect, the control device controls each of the storage batteries of the plurality of power supply devices so as to respond to the power usage amount suppression request based on the power information of the power supply device group, so that each consumer individually requests the power usage amount suppression. Even if it is a case where it cannot respond to, a request | requirement of electric power consumption suppression can be achieved. In particular, in a specific consumer, when power consumption can be suppressed beyond the power consumption suppression request, it is possible to make up for the consumers who cannot respond to the power consumption suppression request. The achievement degree with respect to the usage amount suppression request can be improved, and the suppression of power consumption can be promoted. Also, since it is only necessary to transmit the power usage suppression request to the power supply device group as compared to the case of transmitting the power usage suppression request to each power supply device, the number of contracts with the customer and the power usage suppression request are transmitted. The load can be reduced.

  An aspect of the present invention includes a storage battery that is connected to a load and a power source and stores electric power, and a management unit that is connected to the storage battery and acquires power information including at least the remaining amount of the storage battery and the power consumption of the load. A step of receiving the power information from a power supply device group in which a plurality of power supply devices that supply power from the power source or the storage battery to the load are grouped; and a step of receiving a power usage restriction request; Controlling each of the storage batteries of the power supply group to achieve the power use restriction request as the power supply group based on the received power use restriction request and the power information; and the power use restriction request Transmitting the achievement status of the power supply device group to the control method.

  In such an aspect, each consumer cannot individually respond to the power usage reduction request by controlling each of the storage batteries of the plurality of power supply devices so as to respond to the power usage reduction request based on the power information of the power supply group. Even if it is a case, the request | requirement of electric power consumption suppression can be achieved. In particular, in a specific consumer, when power consumption can be suppressed beyond the power consumption suppression request, it is possible to make up for the consumers who cannot respond to the power consumption suppression request. The achievement degree with respect to the usage amount suppression request can be improved, and the suppression of power consumption can be promoted. Also, since it is only necessary to transmit the power usage suppression request to the power supply device group as compared to the case of transmitting the power usage suppression request to each power supply device, the number of contracts with the customer and the power usage suppression request are transmitted. The load can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, it can respond | correspond widely by several consumers with respect to the electric power usage amount suppression request | requirement of electric power usage. In particular, when a customer individually responds to a power consumption suppression request, it may not be possible to implement a response to a power usage suppression request, but a plurality of consumer power supply devices may be grouped together. By responding, it is possible to improve the degree of achievement with respect to the power consumption reduction request. In addition, by suppressing the increase in the number of contracts between the requester (electric utility or grid operator or demand response aggregator) that transmits the power consumption suppression request and the consumer, Processing can be simplified by reducing the number of transmissions.

1 is a block diagram of a demand response type power control system according to Embodiment 1 of the present invention. FIG. It is a block diagram of the power supply device which concerns on Embodiment 1 of this invention. It is a block diagram of a control device concerning Embodiment 1 of the present invention. It is a flowchart which shows the control method of the demand response corresponding | compatible power supply control system which concerns on Embodiment 1 of this invention.

  Hereinafter, the present invention will be described in detail based on embodiments.

(Embodiment 1)
FIG. 1 is a block diagram showing a schematic configuration of a demand response compatible power supply control system according to Embodiment 1 of the present invention.

  As shown in FIG. 1, a demand response type power supply control system 1 includes a demand response aggregator 3 that collectively trades supply and demand adjustments from an electric power company or a system operator 2 (hereinafter collectively referred to as an electric power company 2). The users 4A to 4D (hereinafter collectively referred to as the user 4), which are a plurality of consumers having the power supply device 10 including a storage battery, are connected between the demand response aggregator 3 and each power supply device 10 of the user 4. And a control device 5.

  Each of the users 4 includes a power supply device 10 to which a commercial power source supplied from the electric power company 2 is connected, and a load 20 connected to the power supply device 10.

  Here, the configuration of the power supply device 10 of the user 4 will be described with further reference to FIG. FIG. 2 is a block diagram showing a schematic configuration of the power supply device.

  As shown in FIG. 2, the power supply device 10 is disposed between a commercial power source supplied from the electric power company 2 and the load 20, and includes a storage battery 11 </ b> A configured by a single battery cell 11 or a plurality of battery cells 11. A monitoring device (CMU: Cell Monitor Unit) 12 that monitors the state of the battery cell 11 of the storage battery 11A, and a management device (BMU: Battery Management Unit) 13 that is a management means of this embodiment that controls the entire power supply device 10. And a charging / discharging device 14 that controls connection of the commercial power source, the storage battery 11A, and the load 20.

  The monitoring device 12 monitors the voltage, current, temperature, etc. for each battery cell 11 or for each battery cell group constituted by a plurality of battery cells 11. In addition, the monitoring device 12 detects an abnormality such as a voltage, current, or temperature of the battery cell 11 and notifies the management device 13 of the occurrence of the abnormality.

  The management device 13 detects the state of charge / discharge of the storage battery 11A, the remaining amount of the storage battery 11A, and the power consumption of the load 20 connected to the storage battery 11A. In addition, the management device 13 performs overall control of each circuit of the power supply device 10 such as operation control of the monitoring device 12 and control of the charge / discharge device 14. For example, when the management device 13 detects that the remaining amount of the storage battery 11A has decreased below a predetermined threshold, the management device 13 controls the charging / discharging device 14 to charge the storage battery 11A with a commercial power source. Moreover, if the management apparatus 13 detects that the storage battery 11A is a full charge, the charge of the storage battery 11A by the charging / discharging apparatus 14 will be stopped. Furthermore, the management device 13 supplies power to the load 20 from the commercial power source and supplies power to the load 20 from the storage battery 11A according to external power supply conditions such as external requests and power outages. The charging / discharging device 14 is controlled to be switched.

  The state of charge / discharge of the storage battery 11A acquired by the management device 13, the remaining amount of the storage battery 11A, and the power consumption of the load 20 connected to the storage battery 11A are transmitted to the control device 5 as power information.

  In addition to the commercial power supplied from the electric power company 2, for example, a power generator that generates power using natural energy, such as a solar power generator or a wind power generator, may be connected to the power supply device 10.

  In the power supply device 10 including such a storage battery 11A, two or more power supply devices 10 are grouped to form a power supply device group 10A. In the present embodiment, the power devices 10 of the four users 4A to 4D constitute one power device group 10A. Note that the number of power supply devices 10 constituting the power supply group 10A is not particularly limited as long as it is two or more. Further, the number of power supply device groups 10A connected to one control device 5 is not particularly limited, and may be one or may be two or more. Incidentally, the respective power supply devices 10 constituting the power supply device group 10 </ b> A are not connected to the same load 20, but are connected to different loads 20 for each user 4. That is, power is not supplied from the storage battery 11A of the power supply device 10 of the other users 4B, 4C, and 4D to the load 20 connected to the power supply device 10 of one user 4A. Such a power supply device group 10A is formed, for example, for each residents' association, for each housing complex, for each office building, for each address, or for each group. For example, if the power supply device group 10A is an office building, the users 4A to 4D can be regarded as the first to fourth floors. The power from the commercial power source supplied to the office building is supplied to the outlet provided on each floor via the distribution board on each floor, and the power is supplied to the load 20 via the power supply device 10 connected to this outlet. It becomes. The electric power from the commercial power supply may be sent to the power supply device 10 via the distribution board on each floor, and supplied from the power supply device 10 on each floor to a load connected to the outlet on each floor. Further, in the case of a detached house where the number of users can be increased or decreased by a residents' association or the like, an identification number is individually set for each user's power supply device 10 and the identification number is stored in the memory of the power supply device 10 for control. By registering the identification number of the power supply device 10 of the target user of the residents' association in the memory that can be read and written in advance in the device 5, when the power information is acquired, the identification number is transmitted together with the power information. The control device 5 can recognize the target power supply device 10 (the user's door) for each neighborhood association. In the case of grouping based on such information as identification numbers, it is also possible to perform control / management based on demand responses for a plurality of residents' associations (groups) with a single control device 5.

  The control device 5 receives from the demand response aggregator 3 a power usage amount suppression request that is a request to suppress the usage amount of electric power from the commercial power supply, and also receives power information from the management device 13 of each power source device 10, and performs predetermined processing. To generate and output a control signal necessary for controlling various operations.

  Here, the control device 5 of the present embodiment will be further described with reference to FIG. FIG. 3 is a block diagram illustrating a schematic configuration of the control device 5.

  As shown in FIG. 3, the control device 5 functions as a server, and includes a control unit 31, a readable and writable memory 32 (an example of storage means) (Random Access Memory: hereinafter referred to as a RAM 32), and various programs. The read-only memory 33 (Read Only Memory: hereinafter referred to as the ROM 33) and the communication unit 34 are stored.

  The control unit 31 includes, for example, a central processing unit (hereinafter referred to as a CPU), and executes various processes in the control device 5. More specifically, the control unit 31 performs various controls on each of the RAM 32 and the communication unit 34 by reading a program written in the ROM 33 and executing the process, and a management device connected to the communication unit 34 The control signal which controls 13 operation | movement, the report of the achievement status with respect to the electric power consumption suppression request | requirement to the demand response aggregator 3, etc. are performed.

  The control device 5 receives the power usage amount suppression request from the demand response aggregator 3 via the communication unit 34. The power usage amount suppression request transmitted from the demand response aggregator 3 is information including at least the usage amount of power for which suppression is requested and the deletion time. In other words, the power usage amount suppression request is a time zone in which the usage of power is suppressed, that is, the time to start suppression of power usage and the time to end suppression of power usage, and the use of power between these two times. Information including quantity.

  The control device 5 also includes power information including at least the state of charge / discharge of the storage battery 11A, the remaining amount of power stored in the storage battery 11A, and the power consumption of the load 20 from the management device 13 of the power supply device 10 of each user 4 via the communication unit 34. Receive. Note that the power information is not limited to the above-described information. For example, when a solar power generation device or a wind power generation device is connected, the power information may include the power generation amount of these power generation devices. Moreover, you may make it acquire the fluctuation | variation log | history of the power consumption of the load 20 in the past time slot | zone as electric power information.

  The control device 5 is a power source in which the power usage suppression request is connected to the control device 5 based on the power usage suppression request received from the demand response aggregator 3 and the storage battery information received from the management device 13 of each user 4. It is determined whether the entire device group 10A can be achieved. That is, the control device 5 can be achieved by controlling charging / discharging of all the power supply devices 10 belonging to the power supply device group 10 </ b> A, instead of individually responding to the power consumption control request by each power supply device 10. Judge. The control device 5 transmits a control command for controlling the storage battery 11 </ b> A to each power supply device 10 when it is determined that the received power usage amount suppression request can be achieved in the power supply device group 10 </ b> A based on a preset condition. . The management device 13 that has received the control command controls the power supply device 10 based on the control command to suppress the amount of commercial power used.

  In the present embodiment, the control device 5 is supplied from the commercial power source by controlling the charging / discharging of the storage battery 11A without suppressing the power consumption of the load 20 in order to suppress the usage amount of the commercial power source. The power supply device 10 of the power supply device group 10A is controlled so as to achieve a request for power suppression (request for power consumption suppression). Thereby, since the user 4 can achieve the power consumption reduction request of the commercial power supply without suppressing the power consumption of the load 20, the convenience is improved and each user 4 </ b> A to 4 </ b> D of the group has an incentive. It becomes possible to receive. Of course, the present invention is not limited to this. For example, when the power supply device 10 can control the power consumption of the load 20, the control device 5 controls the power consumption of the load 20 in addition to the charge / discharge control of the storage battery 11A. The power supply device 10 may be controlled so as to be suppressed, and the power usage amount suppression request from the demand response aggregator 3 may be achieved. However, when the power consumption of the load 20 is suppressed, the convenience of the user 4 is reduced.

  In addition, the control device 5 transmits the achievement status of the power supply device group 10 </ b> A in response to the power usage amount suppression request to the demand response aggregator 3 via the communication unit 34. The communication unit 34 is connected to the management device 13 of the power supply device 10 and the demand response aggregator 3 via a network such as the Internet network or a public telephone line network.

  The preset condition determined by the control device 5 can be set based on the state of charge / discharge of the storage battery 11A, the remaining amount of the storage battery 11A, the power consumption of the load 20, and the like.

  Here, the charging / discharging state of the storage battery 11A of each of the users 4A to 4D constituting the power supply device group 10A, the capacity of the storage battery 11A, the charging power of the storage battery 11A, the remaining amount of the storage battery 11A, and the load 20 connected to the storage battery 11A An example of the power consumption is shown in Table 1 below.

  As shown in Table 1, the storage batteries 11A of the users 4A and 4D are on standby without being charged, and the storage batteries 11A of the users 4B and 4C are being charged using a commercial power source. Each of the users 4A to 4D can output a maximum of 1 kW (equivalent to 40% of the capacity of the storage battery) in one hour of discharge. If the charge / discharge state is a user (storage battery 11A of the power supply device 10) that is being discharged, charge / discharge control is performed, the power supply to the load is stopped because the discharge is stopped as the control method. In order to avoid this, the user who is discharging (the storage battery 11A of the power supply device 10) is not subject to charge / discharge control. Therefore, in the above table, users in charge / discharge states that can be controlled are shown.

  The power supply device group 10A of the present embodiment is configured by the power supply devices 10 of the users 4A to 4D, and the control device 5 responds to the power usage amount suppression request for the power supply device group 10A based on various conditions. The processing is performed by the power supply device 10 of 4A to 4D. In the state shown in Table 1, power is supplied from the commercial power source to the loads 20 of the users 4A to 4D.

  Here, examples of the conditions controlled by the control device 5 include the following three.

  Condition 1 is to minimize the number of power supply devices 10 that are controlled in response to the power consumption suppression request. In this way, the number of processes of the control device 5 is reduced by performing charge / discharge control of the storage battery 11A so as to minimize the number of power supply devices 10 to be controlled, thereby reducing the power consumption of the commercial power supply. 5 can be reduced. That is, as the number of power supply devices 10 to be controlled increases, the number of processes in which the control device 5 transmits a control signal increases and the load on the control device 5 increases. Therefore, the number of power supply devices 10 constituting the power supply device group 10A There is a possibility that the number of power supply group 10A is limited. By controlling the power supply devices 10 so as to minimize the number of power supply devices 10 to be controlled, an increase in the number of processes of the control device 5 is suppressed, and a power supply device group 10A that can be handled by one control device 5 The number of power supply devices 10 and the number of power supply device groups 10A can be increased.

  Condition 2 secures a certain amount of remaining power (for example, 30%) in the storage battery 11A of each power supply device 10 constituting the power supply device group 10A in consideration of an unexpected situation such as a disaster or a power failure. It is to keep it. That is, if the remaining amount of electricity stored in each storage battery 11A is too low, the storage battery 11A cannot always be used sufficiently in the event of an unexpected situation where supply of commercial power such as a disaster or power outage cannot be obtained. In addition, by securing a certain amount of remaining power, it is possible to supply the power of the storage battery 11A to the load connected to the power supply device even in the event of an unexpected situation such as a disaster or a power failure.

  Condition 3 is to make the minimum remaining amount of power stored in the storage batteries 11A of the plurality of power supply apparatuses 10 after the power usage amount suppression request out of the methods for responding to the power usage amount suppression request. That is, after responding to the power usage restriction request, the remaining amount in the group can be smoothed by making the remaining amount of the storage battery 11A that is the smallest among the plurality of power supply devices 10 the highest. .

  In addition, conditions 1-3 mentioned above shall be controlled so that the state of each user 4A-4D, ie, the electric power used of the load 20, etc., cannot be changed while responding to the electric power consumption suppression request. . In addition, priority should be given to responding to the request for suppressing power consumption (no unnecessary deletion). In the case where there are a plurality of patterns that satisfy the conditions 1 to 3, priority is given to the condition 4 in which the total value of the remaining power of the users 4A to 4D is higher.

  The control device 5 transmits a control command for setting the charging / discharging status of the storage battery 11 </ b> A in each power supply device 10 to each power supply device 10 based on the above-described conditions 1 to 3 so as to respond to the power consumption suppression request. To do. In conditions 1 to 3, condition 1 has the highest priority and condition 3 has the lowest priority. Here, an example of the power usage amount suppression request for the power supply device group 10A from the demand response aggregator 3 and a control method based on the conditions 1 to 3 will be described based on Examples 1 to 3.

Example 1
A case where there is a 1 kW, 1 hour power consumption control request will be described. In other words, until now, four users 4A to 4D individually received a request for suppressing power consumption for 0.25 kW for one hour, and responded to suppression of power consumption for achieving this, this embodiment Then, as for the four users as a whole, the control device 5 controls each of the users 4A to 4D so as to suppress the power usage amount in order to achieve the one hour power usage amount reduction request (0.25 kW × 4 users). The charging / discharging of the storage battery 11A of the power supply device 10 is controlled. The following correspondences A to B can be considered as a control method that satisfies the conditions 1 to 3 with respect to a 1 kW, 1 hour power consumption suppression request.

(Action A)
The battery of user 4A is discharged for 1 hour.

  Since a 1 kW load is connected to the storage battery 11 </ b> A of the user 4 </ b> A, the use of commercial power supply for 1 kW for 1 hour can be realized by supplying power from the storage battery 11 </ b> A to the load 20 for 1 hour. In this case, the remaining amount of power stored in the storage battery 11A of the user 4A is 60% after 1 hour. That is, in correspondence A, since it can respond only by control of charge / discharge of the storage battery 11A of the user 4A, the condition 1 is satisfied. Further, the storage battery 11A of the user 4A satisfies the condition 2 because the remaining amount is 60%. In this correspondence A, the user 4B continues to be charged and reaches 100% of the remaining power (full charge), and the user 4C also continues to be charged to reach 70% of the remaining power and remains on standby. The remaining amount of the 4D storage battery 11A is 50%.

(Action B)
The charging of the user 4B is stopped for 1 hour.

  Since the charging power of the storage battery 11A of the user 4B is 1 kW, the use of the commercial power supply for 1 kW for 1 hour can be realized by stopping the charging to the storage battery 11A for 1 hour. Therefore, after 1 hour, the remaining amount of power stored in the storage battery 11A of the user 4B is maintained at 70%. In addition, since the storage battery 11A of the user 4C is continuously charged, the remaining power storage amount becomes 70% after 1 hour. Note that the remaining amount of power storage is maintained for the waiting users 4A and 4D, so that the remaining power storage amount remains 100% and 50%, respectively.

  In such correspondences A and B, the minimum value of the remaining amount of electricity stored in the four users 4A to 4D is 50%. For the correspondences A and B, the one that increases the total remaining amount of all the storage batteries 11A of the power supply device group 10A after responding to the power usage amount suppression request is selected (condition 4). The total value of the remaining power of the four users 4A to 4D is 280% (60 + 100 + 70 + 50) in correspondence A and 290% (100 + 70 + 70 + 50) in correspondence B. Therefore, control is performed to perform the response B.

(Example 2)
When there is a request for power consumption suppression of 1.5 kW for 1 hour, the following correspondences A to D can be considered as a control method that satisfies the conditions 1 and 2.

(Action A)
The storage battery 11A of the user 4A and the user 4D is discharged.

  Since a 1 kW load is connected to the storage battery 11A of the user 4A, by supplying power from the storage battery 11A to the load 20 for 1 hour, 1 kW of the commercial power supply is suppressed for 1 hour. be able to. Moreover, since the load 20 of 0.5 kW is connected to the storage battery 11A of the user 4D, by supplying power from the storage battery 11A to the load 20 for 1 hour, the commercial power supply 0.5 kW and the commercial power supply of 1 hour Can be suppressed. That is, a total of 1.5 kW and 1 hour of power suppression can be realized.

  As a result, after 1 hour, the remaining amount of the storage battery 11A of the user 4A is 60% and the remaining amount of the storage battery 11A of the user 4D is 30%. It should be noted that the remaining power levels of the users 4B and 4C who have continued charging are 100% and 70%, respectively.

(Action B)
The storage battery 11A of the user 4D is discharged, and charging of the storage battery 11A of the user 4B is stopped.

  As a result, after 1 hour, the remaining amount of the storage battery 11A of the user 4D is 30%, and the remaining amount of the storage battery 11A of the user 4B is 70%. Since the user 4A remains on standby, the remaining amount of power storage is 100%, and the charging of the user 4C is continued, so the remaining power storage amount is 70%.

(Correspondence C)
The storage battery 11A of the user 4A is discharged, and charging of the storage battery 11A of the user 4B is stopped.

  As a result, after one hour has elapsed, the remaining amount of the storage battery 11A of the user 4A is 60%, and the remaining amount of the storage battery 11A of the user 4B is 70%. In addition, since the charging of the user C is continued, the remaining amount of power storage is 70%, and the remaining amount of power storage is 50% because the user D remains on standby.

(Correspondence D)
The charging of the storage battery 11A of the user 4B is stopped and discharged.

  As a result, after 1 hour has elapsed, the remaining amount of the storage battery 11A of the user 4B becomes 50%. Since the user 4A remains on standby, the remaining amount of electricity stored is 100%, and the user 4C is charged continuously, so the remaining amount of electricity stored is 70%, and the user 4D remains on standby, so the remaining amount of electricity stored is 50%.

  Among these correspondences A to D, when the condition 3 is taken into consideration, the correspondence C or D is obtained. Among these, after responding to the power usage restriction request, the one that has a large remaining total of all the storage batteries 11A in the power supply group 10A is selected. The total value of the remaining amount of charge of the four users 4A to 4D is 250% (60 + 70 + 70 + 50) in correspondence C, and 270% (100 + 50 + 70 + 50) in correspondence D. Therefore, control is performed so as to perform correspondence D.

(Example 3)
When there is a 2 kW, 1 hour power consumption control request, the following correspondences A to B can be considered as a control method that satisfies the conditions 1 and 2.

(Action A)
The storage battery 11A of the user 4A is discharged, and charging of the storage battery 11A of the user 4B is stopped.

  As a result, after 1 hour has elapsed, the remaining amount of power stored in the storage battery 11A of the user 4A is 60%, and the remaining amount of power stored in the storage battery 11A of the user 4B is 70%. In addition, since the charging of the user C is continued, the remaining amount of power storage is 70%, and the remaining amount of power storage is 50% because the user D remains on standby.

(Action B)
The storage batteries 11A of the users 4B and 4C are discharged.

  As a result, after 1 hour has elapsed, the remaining amount of the storage battery 11A of the user 4B is 50%, and the remaining amount of the storage battery 11A of the user 4C is 30%. In addition, since the users 4A and 4D remain in the standby state, the remaining amount of power storage is 100% and 50%, respectively.

  Of these correspondences A and B, the correspondence A satisfying the condition 3 is performed.

  As described above, the power device group 10A can efficiently respond to the power usage amount suppression request by selecting and responding to the power usage amount suppression requests of the first to third embodiments according to conditions 1 to 4. Often, the amount of commercial power used can be reduced. In other words, if the users 4A to 4D are unable to achieve the power usage amount suppression request individually, the user 4 that cannot be achieved cannot receive the incentive. Specifically, for example, in response to the power usage amount suppression request as in the third embodiment, the individual user who can only output 1 kW in one hour cannot be achieved individually. However, by responding to the power usage amount suppression request of the third embodiment with the power supply device group 10A, the power supply device group 10A can also execute the power usage amount suppression request that the power supply device 10 of the user 4 cannot implement alone. it can. In other words, even if there is a power supply device 10 of the user 4 that can reduce power consumption only for a certain amount of power consumption suppression request, the remaining deletions that cannot be performed can be performed in other ways that have room for power consumption deletion. By supplementing by the user 4, the entire power supply device group 10 </ b> A can be achieved in response to the power usage amount suppression request. Therefore, in the demand response type power supply control system 1 of the present embodiment, it is possible to improve the degree of achievement with respect to the power consumption reduction request. It should be noted that the incentive distribution for the achievement of the power usage restriction request may be distributed evenly to the users 4A to 4D of the power supply device group 10A, and the ratio of contribution to the power usage restriction request You may make it distribute according to. When incentives are distributed according to the degree of contribution to the power usage amount suppression request, the control unit 31 of the control device 5 may be determined based on a control command transmitted to each management device 13.

  Further, the demand response aggregator 3 only needs to transmit a power usage amount suppression request to the control device 5, and a contract between the demand response aggregator 3 and each user 4 is not required. That is, with the contract between the demand response aggregator 3 and the power supply device group 10 </ b> A, a plurality of users 4 can respond to the power usage amount suppression request. Therefore, it is possible to reduce the number of demand response aggregator 3 transmitting the power usage amount suppression request at the same time, thereby reducing the load on the demand response aggregator 3 and suppressing the processing delay.

  Here, the control method corresponding to the electric power consumption suppression request | requirement by the demand response corresponding | compatible power supply control system 1 of this embodiment is demonstrated with reference to FIG. FIG. 4 is a flowchart showing the control operation of the demand response type power supply control system.

  First, in step S1, after the control device 5 receives a power usage amount suppression request from the demand response aggregator 3, in step S2, the control device 5 receives from the management device 13 in each power supply device 10 of the power supply device group 10A. The storage battery 11A charging / discharging state, the storage battery information such as the remaining storage amount of the storage battery 11A, and the power information such as the power consumption information of the load 20 connected to the power supply device 10 can be used to respond to the power consumption control request. Determine if it is possible. If the control device 5 determines in step S3 that the power supply group 10A cannot respond to the power usage amount suppression request (step S3; No), the process ends in step S10.

  When the control device 5 determines in step S3 that the power supply device group 10A can respond to the power usage amount suppression request (step S3; Yes), in step S4, the above-described conditions 1 to 4 are satisfied. Based on the power supply device 10 of the power supply device group 10A, the power supply device 10 to be controlled is selected, and in step S5, the control device 5 transmits a control signal for controlling charging / discharging of the storage battery 11A of the power supply device 10 to be controlled. Reduce the amount of power used by commercial power sources.

  Next, in step S6, whether or not the time requested by the power consumption suppression request has elapsed, or at a time set in advance so as to charge or discharge the storage battery 11A of each power supply apparatus 10 with the highest priority. It is determined whether or not the response to the power usage amount suppression request is to be ended depending on whether or not the processing is completed. If it is determined in step S7 that the process does not end (step S7; No), the target achievement status of the entire power supply group 10A is confirmed in step S8. If it is determined in step S9 that the target of the power consumption suppression request has been achieved (step S9; Yes), steps S6 to S8 are repeated. If it is determined in step S9 that the target has not been achieved (step S9; No), steps S4 to S8 are repeated.

  In such a control method for the power usage amount suppression request of the demand response type power supply control system, the power usage amount suppression request is responded by the power supply device group 10A configured by two or more power supply devices 10. In addition, it is possible to respond to a power usage amount suppression request that cannot be individually handled by the user 4. Therefore, it is possible to respond to a large power usage amount suppression request, and the number of times the power usage amount suppression request can be handled increases, so that more incentives can be received. Further, the demand response aggregator 3 only needs to transmit a power usage amount suppression request to the control device 5, and a contract between the demand response aggregator 3 and each user 4 is not required. Therefore, the demand response aggregator 3 can reduce the number of power usage amount suppression requests transmitted at the same time, and the processing of the demand response aggregator 3 can be suppressed.

(Other embodiments)
As mentioned above, although one Embodiment of this invention was described, the basic composition of this invention is not limited to what was mentioned above.

  For example, the power consumption information received by the control device 5 from the management device 13 may include a fluctuation history of the power consumption of the load 20 in the past time zone. You may make it select the user 4 who suppresses electric power consumption based on the fluctuation history of the power consumption of the load 20 in this past time slot | zone. That is, the optimal user who should control the charging / discharging of the storage battery 11A from the history of the power consumption of the past load and the remaining amount of storage of the storage battery 11A, etc., during the time period in which the suppression of the power usage is requested by the power consumption reduction request 4 may be selected.

  Specifically, the time period for reducing the power consumption in the power consumption suppression request received from the demand response aggregator 3 is large in the load 20 of each user 4A to 4D of the power supply device group 10A from the past history. If it is known that, from the history of power consumption of the load 20 of each user 4A to 4D and the remaining amount of storage of the storage battery 11A of the power supply device 10 of each user 4A to 4D, as the power supply group 10A, What is necessary is just to judge whether the electric power usage which should be suppressed by the electric power usage suppression request | requirement can be covered with the electric power supply from 11 A of storage batteries.

  In the above-described first embodiment, the configuration in which the plurality of users 4 are not in the same state is illustrated. However, for example, when the plurality of users 4 are in the same state, that is, in the above-described first embodiment, the user 4E further includes If the state, capacity, remaining amount, load 20, etc. of the storage battery 11A are all the same as those of the user 4B, the charging of either the user 4B or the user 4E is stopped in the first embodiment. Good. Here, which of the user 4B and the user 4E is selected depends on the one found earlier in the algorithm for performing charge / discharge control, for example, if the states of the users 4A to 4D are confirmed in alphabetical order. 4B may be prioritized and charge / discharge control may be performed on the storage battery 11A of the power supply device 10 of the user 4B.

  Further, in practice, the power consumption of the load 20 also changes while responding to the power usage restriction request. For this reason, the achievement degree (the power usage amount that can be suppressed) and the status of each user 4 and the status of each user 4 are confirmed at regular intervals, for example, every 30 minutes or 1 hour, and each user 4 is checked according to the status. The charge / discharge control for the storage battery 11A of the power supply device 10 may be reset. Specifically, the state of each user 4 is confirmed again, and it is determined from the amount of power to be deleted in the remaining time that the same charge / discharge control may be maintained for the power supply device 10 that is currently controlling the charge / discharge. If it is done, the same charging / discharging control is continued with respect to the power supply apparatus 10 which is currently controlling charging / discharging without resetting as it is. On the other hand, it is determined that the power consumption suppression request cannot be achieved with the same charge / discharge control with respect to the power supply apparatus 10 that is currently controlling charging / discharging, or is determined to be achieved exceeding the power usage suppression request. If this is the case, the optimum charge / discharge control method that can achieve the suppression of the power consumption required in the power usage suppression request without significantly exceeding the power usage suppression request is found again. What is necessary is just to send a control signal from the control apparatus 5 with respect to the storage battery 11A of the apparatus 10 so that charging / discharging control may be performed according to the found method.

  In the first embodiment described above, the power amount is deleted according to the power usage amount suppression request. However, in practice, it is preferable to delete the power amount with a certain margin. That is, the realization method which can suppress by 10% more with respect to the electric power consumption with which the electric power consumption suppression request | requirement was performed is implemented. This is in order to ensure that the request for suppressing power consumption can be finally met.

  Therefore, in consideration of actual operation, the control device 5 may be controlled to satisfy the following conditions 5 and 6 in addition to the conditions 1 to 4 of the first embodiment. That is, since the charge / discharge state changes depending on the situation of the user 4, the situation of the user 4 is constantly monitored, and charge / discharge control is performed again on the storage battery 11A of the power supply device 10 of each user 4 (condition 5). ). Further, the amount of power used is suppressed by a predetermined amount from the power usage amount suppression request from the demand response aggregator 3 (condition 6).

  Moreover, although the configuration in which only one control device 5 is provided in the demand response-compatible power supply control system 1 of the first embodiment described above is not particularly limited, the number depends on the number of power supply device groups 10A. A plurality of control devices 5 may be provided. That is, as the number of power supply device groups 10A processed by the control device 5 increases, the number of processes for transmitting a control signal to the power supply device 10 increases accordingly. Therefore, by providing a plurality of control devices 5, one control device is provided. 5 can be reduced, and the load related to the processing of the control device 5 can be suppressed.

  Furthermore, in Embodiment 1 mentioned above, although the control apparatus 5 received the electric power usage amount suppression request | requirement from the demand response aggregator 3, it is not limited to this in particular, The control apparatus 5 is directly from the electric power provider 2. The power usage amount suppression request may be received. Of course, the demand response aggregator 3 may be provided in multiple stages.

  The present invention can be satisfactorily used in an industrial field for constructing a system corresponding to a demand response and an industrial field for maintenance and operation thereof.

DESCRIPTION OF SYMBOLS 1 Demand response corresponding | compatible power supply control system 2 Electric power company or system operator 3 Demand response aggregator 4, 4A-4D User 5 Control apparatus 10 Power supply apparatus 10A Power supply apparatus group 11 Battery cell 11A Storage battery 12 Monitoring apparatus 13 Management apparatus 14 Charging / discharging Device 20 Load 31 Control unit 32 RAM
33 ROM
34 Communication Department

Claims (6)

A storage battery that is connected to a load and a power source and stores power; and a management unit that is connected to the storage battery and obtains power information including at least the remaining amount of the storage battery and the power consumption of the load. A power supply group in which a plurality of power supply devices that supply power from the storage battery to the load are grouped; and
The power usage amount suppression request and the power information acquired by the management unit are received, and the power usage amount suppression request is achieved as the power supply device group based on the received power usage amount suppression request and the power information. A control device that controls each of the storage batteries of the power supply device group so as to transmit the achievement status of the power supply device group in response to the power consumption suppression request;
A demand response type power supply control system comprising:   The demand control type power supply control system according to claim 1, wherein the control device controls a discharge amount of each of the storage batteries in response to the power usage amount suppression request.   The demand control type power supply control system according to claim 1, wherein the control device receives the power usage amount suppression request transmitted from a demand response aggregator.   The control device adjusts the discharge amount of the storage battery in each power supply device of the group of power supply devices to determine whether or not the power usage amount suppression request can be achieved, and based on the result of the determination, the power supply device group 3. The demand response type power control system according to claim 2, wherein the power consumption is controlled. A storage battery that is connected to a load and a power source and stores power; and a management unit that is connected to the storage battery and acquires power information including at least a remaining amount of the storage battery and power consumption of the load. The power information from a power supply device group in which a plurality of power supply devices that supply power from a storage battery to the load are grouped, and
Request to reduce power consumption,
And controlling each of the storage batteries of the power supply group to achieve the power use restriction request as the power supply group based on the received power use restriction request and the power information, and A control device that transmits an achievement status of the power supply device group in response to a suppression request. A storage battery that is connected to a load and a power source and stores power; and a management unit that is connected to the storage battery and acquires power information including at least a remaining amount of the storage battery and power consumption of the load. Receiving the power information from a power supply device group in which a plurality of power supply devices that supply power from the storage battery to the load are grouped;
Receiving a power usage restriction request;
Controlling each of the storage batteries of the power supply group to achieve the power use restriction request as the power supply group based on the received power use restriction request and the power information;
Transmitting the achievement status of the power supply device group in response to the power usage restriction request.

Images